Allow usage of SomeABC.register as a class decorator. Patch by Edoardo Spadolini (#10868).
diff --git a/Doc/library/abc.rst b/Doc/library/abc.rst
index 9fadbd2..2eced45 100644
--- a/Doc/library/abc.rst
+++ b/Doc/library/abc.rst
@@ -55,6 +55,9 @@
assert issubclass(tuple, MyABC)
assert isinstance((), MyABC)
+ .. versionchanged:: 3.3
+ Returns the registered subclass, to allow usage as a class decorator.
+
You can also override this method in an abstract base class:
.. method:: __subclasshook__(subclass)